Thread: Setbackground doesn't work for me Solution for it?

I'm currently trying to make a game with Eclipse I have ran into one problem.

When I try and set a background color Nothing shows up, I think it's because "setBackground" is bug for me.
Is there another way instead of using "setBackground"?

package Default.Package;
 
import javax.swing.*;
import java.awt.*;
 
 
 
 
public class AC extends JComponent {
 
    public void ContentPane() {
        setBackground(Color.PINK);
    }
 
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(getBackground());
        g.fillRect(0, 0, getWidth(), getHeight());
        Graphics2D g2d = (Graphics2D) g;
 
        //Begin drawing
    }
 
    public static void main(String[] args) {
        JFrame gui = new JFrame("Window Title");
        AC cp = new AC();
 
        gui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        gui.setSize(800, 600);
        gui.setResizable(false);
        gui.setLocationRelativeTo(null);
 
        gui.setContentPane(cp);
        gui.setVisible(true);
    }
}

package Default.Package;
 
import javax.swing.*;
import java.awt.*;
 
 
 
 
public class AC extends JComponent {
 
    public void ContentPane() {
        setBackground(Color.PINK);
    }
 
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(getBackground());
        g.fillRect(0, 0, getWidth(), getHeight());
        Graphics2D g2d = (Graphics2D) g;
 
        //Begin drawing
    }
 
    public static void main(String[] args) {
        JFrame gui = new JFrame("Window Title");
        AC cp = new AC();
 
        gui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        gui.setSize(800, 600);
        gui.setResizable(false);
        gui.setLocationRelativeTo(null);
 
        gui.setContentPane(cp);
        gui.setVisible(true);
    }
}

This is my setup. When I click Run.Ac.java I can get the name on the top right. but I can't get anything to show up on the screen/client area.

Your code does not demonstrate your error leaving us completely in the dark as to figuring out how to help you. Consider creating and posting an SSCCE.